#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
using namespace std;

const int N = 310, INF = 0x3f3f3f3f;

int n;
int a[N], sum[N];
int f[N][N];

void solve()
{
    cin >> n;
    for (int i = 1;i <= n;i++) {
        cin >> a[i];
        sum[i] = a[i] + sum[i - 1];
    }

    memset(f, INF, sizeof f);
    for (int i = 1;i <= n;i++) f[i][i] = 0;

    for (int len = 2;len <= n;len++)
        for (int i = 1, j = i + len - 1;j <= n;i++, j++)
            for (int mid = i;mid < i + len - 1;mid++)
                f[i][j] = min(f[i][j], f[i][mid] + f[mid + 1][j] + sum[j] - sum[i - 1]);
    cout << f[1][n];
}

signed main()
{
    //ios::sync_with_stdio(0);
    //cin.tie(0);cout.tie(0);
#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    std::istringstream in(R"()");
    std::cin.rdbuf(in.rdbuf());
#endif
    int T = 1;
    //cin>>T;
    for (int i = 1;i <= T;i++) {
        solve();
    }
}